Mechanism for crimping leader pipe



0cm. 7, 1930. A Q @MPF 1,777,728

MECHANISM FOR CRIMPING LEADER PIPE Filed Feb. 25, 1928 3 Sheets-Sheet l oct. 7,1930. `A D. KUMPF 1,777,728

` MEGHANISM FOR GRIMPING LEADER EIIPE AFiled Feb. 25, 1928 svsheets-sneet 3 @www ` zsnoeus'r fr. knlvrrr. ori II'HILDELIHIA. PENNsYLVANmq"AssrononffroBERGER 1 Ygioor PHILADELPHIA, rnNNsYLvaNiiAf, `-Ag,oonrolm'rrolv.or

Patented Oct. 7, l`930v r vBROTHERS CoMPAN s rnNNsYLvAlxrm v y Riivrrivo `trainen PI'P l Myfinventin relates to an improvement 1nl mechanism for'crnnpingleader pipe;

As `is"vvell"known, yleader pipe Sed I draining roof gutters is customarily *formed iron, tin, copper 4and the like, and is produced 1n various shapes such asround and jquadri ftions- 'of leader pipe are inuse assembled to- Vinto'anend `offan adjacent section and to facilitate." the* assembly the' sections are er'r'npedor'reducediat Oneend.

crimping. Such crimping devices are sepa- `rate and' apart fr`om` the mechanism used for 2o forlning the secfti'o'n's'and the crimping operaltion" has required aneXtra operation involv-r `siderabl'e'a spaceto enable the sections to` 'be nianeuvered'int'o and out of thel crimping de- `:.ftZfviQe after Withdrawal `2fromffthlel forming i'ine'chanisrn. "l L. Y l .y

Af ""objectof the present `invention, is the lprovisionuof an 'improved crimping `mechians'm for uniformly" crimping the lends of' `au sections of pipe Aof@thecharacter described.

further object-is' the'- provision 'ofr such mechanism vvhich may be combined with a l fluting` mechanismorl `mechanism for fform-y ing the pilfrom" sheet metal whereby econ- 35 l of labor and .spaeelis obtainegil.` Further objects and advantageswill'be ap- `parent upon consideration of the fellovvingl ing dnaivings in which: y r

ig. lds'asectional1 view. of aport-ion of a leader. `pipe forming. machineembodyingV `;.myinventimg,` l

1 l Fis-.2 is e frentvlew .50 ignrisfa diagrammaticviewof a-modiasshown at'g",V Figs. llfandn' Ying extrafhandling of the sections andconguides z" at the-outer ends of which are-formed through `slots nfin theblocksnnd threaded description Withireference to.` the a'ccorn panyvan'. enlarged :sectional'view of a the usual devices,

my invention; j

Vmodified embodiment ofmy invention; `and f 5 in sections `from" sheet` metal; Vas galvanized y Fig. 7 is-anendvievv ofthecriinped"endV ofA a plain round pipe "forrne'df byilthefim# proved mechanism.

I `Referringmoreparticularlyto'fFigsr ablyfdriven', a die 'or :mandrel` d uted for am? distance `froniits endals indicated atejyfFig. '1, anda plurality of lutingvrolls f, f. adapted to cooperate with the diedtoeffect:flutingiof the leader "pipe after?` its formation,` vided." The end? ojflithe'die is 'beveledloff Surroundingfthe endi of die lclwis a y ring-` `lil e frame*V 7L suitably supported from the frame d and Which ils` provided Withwradial bosses "7'. Within theradial` guides are `positioned blocks biflircated at ytheir inner endsan'd adapted to be Vadjustably secured to the` frame. 7L means-of` bolts 1m-"passed into -the frame fhl For` adjustment,nbolts 0 'are threaded thrbnghlthe bosses and-bear against the outer ends of the blocks /cl Within thebifurcatedendof each oithe blocks/c .4 alnger-p is securedwat one end bymeansof i p extends `beyond "the `end; of, the .1 blockl `to Which itis attached f and v"is desirably beveled pivot."` Thefree end of` eachi oi' the `fingers from therear tothe front,V as shown inFig. y

`3. '"Securefd; to thefor'vvard` facesof the fin-1 gers-.y2 are members@ which extendslightly `beyond i the free ends of" `the i fingers, 3 and springsA 71 connected `to the "fingers and to brackets s, extending from` fr-ame; h; :act to hold the iingers `in retracted position fixed shown in Figz.` y a --v y In operation, the leader1 pipew is formedby not shown. andthe formed l 05 i `by the engagement of stops 1f onpthewuppier Y Y ends of the fingers With,` the blocks :Ich as pipe is advanced on die (Z by feed rolls c. In the advance of the pipe it is acted on by the fiuting rolls f and passes into the control of feed rolls b. As the end of the pipe is advanced, it strikes the members g, carried by fingers p (see Fig. 3), and in the continued advance of the pipe the fingers are caused to swing on an arc so that their ends bear down on and crimp the end portion of the pipe, as shown at y Fig.l t, the crimping being'permitted by the fact that the end of the die cl is beveled off as at g. Vhen the fingers pass over their centers theyV lie against the pipe until, on withdrawal of a completed section from the machine, they are drawn back into retracted position by the springs r, for th crimping of a following section. Referring now to Fig. 5, invwhich a modification of my invention is shown diagrammatically, it will be noted that thefingers p', which are suppoi'ted and operate as do the fingers p, are variously positioned to crimp ,-a leader pipe quadrilateral in cross-section, in

that fingers are provided for the corners and sides of the pipe.

In the modification shown in Figs. l to 4, the pipe is formed and fed off the die. It

I may be desirable, however, to crimp the ends of preformed pipe sections, using the crimping means disclosed which produces a uniform crimped end in aI simple manner. 'A modified arrangement suitable for this operation is shown in Fig. 6 in which l indicates a die or mandrel suitably supported at its rear end. Grooves 2 may be provided longitudinally of the die if it is desired to form or crimp corrugated pipe. If it is desired to crimp circular pipe, these grooves may, of course, be eliminated although if present they would do no harm. In crimping corrugated pipe, irrespective of whether the pipe is or is not corrugated in the same operation, rollers 3 entering the grooves may be provided. Feed rolls, not shown in Fig. 6, similar to rolls 7) and c may be provided.

Mounted in a frame 4 corresponding to frame 7L lthere are a plurality of blocks 5 carrying fingers. In this case, instead of the fingers being integral, they are formed of two parts 6 and 7 pivoted as at 8 to each other. The outer part 6 of each finger is pivoted to the block and provided with a stop corresponding to stop t to limit its spring-urged inward movement. A :spring 10 normally keeps parts 6 and 7 in alineineiit by engagement of a stop face 9 of 7 with a corresponding stop face of 6. A member ll corresponding to member Q is carried by each part 7.

The operation of this last described modification will be apparent if the result of forcing a pipe l2 over the free end of the mandrel l is considered. If a pipe of circular section is used with the machine shown, the end will force members 7 inwardly as shown at the bottom of Fig. 6 so that the pipe sec- .lar cross-section,r the pipo end.

tion is free to slide upwardly over the mandrel. If rollers 3 are used, the pipe section, as it passes therebeneath, will be corrugated. Of course, if it is desired to retain the circurollers may be removed or eliminated. V

After the trailing end of the pipe section clears members ll, parts 7 will return to normal position as shown at the top of Fig. (i.

-Upon removal ofthe pipe, it will be crimped as previously described` in connection with the modification of Fig. l, parts 6 and 7 acting effectively as anintegra-l finger.

In Fig. 7 there is indicated, at 13, a pipe of circular cross-section having a crimped end 14. It may be noted that a large number of crimping fingers are preferably vemployed to prevent bulging of intermediate parts of the It will vice in accordance with my invention may be combined with any desired formingdevices for the production of finished leader pipe by a continuous operation, or that the device may be used alone, and it will be understood that the device is adaptable, with obvious modification, to the crimping of leader pipe of various cross-sectional-shapes and wither withoutfiuting or corrugation..

ters Patent is l. Mechanism for crimping pipe, comprising a mandrel, and crimping means adjacent said mandrel for crimping the ends of pipes moving along and guided by the mandrel,`

said crimping means comprising a plurality of fingers engageable by the ends of pipes and movable upon such engagement inwardly towards the axis ofthe mandrel against the ends of pipes.

2. Mechanism for crimping pipe, which includes in combination a frame, blocks adjustably 'secured to the frame, a plurality of fingers pivotally carried by said blocks, means ten-ding to normally retain said fingers in a retracted position and members eX- tending from said fingers and adapted to be engaged by the end of a pipe whereby on advance of the pipe said fingers will be moved through an arc to effect crimping of the end portion of said pipe and to permit the passage of the body of the pipe.

` Mechanismfor crimping pipe, comprising a mandrel having a surface for guiding a pipe for longitudinal movement, and means adjacent an end of the guiding surface operative to crimp the end only of a pipe as it moves from said surface over the said end thereof,`said means vcomprising a plurality of fingers arranged to swing inwardly against the end of the pipe to effect crimping.

4. Mechanism for crimping pipe, comprisingY a mandrel having a surface for guiding a pipe for longitudinal movement, and-means adjacent an end of the guiding surface operbe understood that the crimping deeA Vhat I claim and desire to protect by Let-w `for guidingv a pipek for longitudinal movement, and means adjacent an end of the guid-` ing surface operative to crimp the end only of a pipe as it moveslrom .said surface over` the said end thereof, said means comprising a plurality oliradially adjustable lingers arranged to swing inwardly against the end of the pipe to effect criinping.

. 6. Mechanism for crimping'pipe, comprising a mandrel having a surface for guiding a pipe for longitudinal movement, and means adjacent an end ot' the guiding surface operative to crimp the end cfa pipe as it moves from said surface over the said end thereof, said means comprising a plurality of lingers arranged to swing inwardly against the end of the pipe `to effect crimping and movable with the pipe to inoperative'position to permit free movement of the portion of the pipe y inwardly of the crimped end. 1

. 7. Mechanism forcrimping pipe, comprising a mandrelhaving` a surface for guiding a pipe for longitudinal movement, and means adJacent an end of the guiding surface operative to crimp the end of a pipe as it moves from said surface over thesaid endV thereof,

said means beingrendered automaticallyoperative by movement of the pipe to a predetermined position. y

8.` Mechanism it'or crimping pipe, comprising a mandrel having a surface for guiding a pipe for longitudinal movement, and means adjacent an end of theguiding surface operi ative to crimp theend of a pipe as it moves from said surface over the said end thereof,`

said means being rendered automatically operative by movement of the pipe to a predetermined position, and being rendered inoperative by movement ol the pipe beyond the position.

9. Mechanism for crimping pipe, comprising means for guiding a pipe for longitudinal movement, and plurality ol crimping fingers, each linger being -pivoted outside the `path of movement of the pipe` with its free end movable'iii the direction of movement of the pipe from one side tothe other of a position normal to the pipe whereby-during,

such movement said end forces a portion of the wall oli' the pipe inwardly.

10.v Mechanism for crimping pipe, comprisiiig means for guiding a pipe for longitudinal movement, and a plurality 4ofcrimping fingers, eachy linger being pivoted' outside the path of movement of the pipe with its free end movable by engagementby the pipe in the direction of movement of the pipe from oneside to the other of a positionner-mal to the pipe whereby during such movement said.- l

end forces a inwardly. y y 1 .11. Mechanism for crimping pipe includportion of the Wall of the pipe inga vplurality of lingers pivoted at their outer ends andnormally yieldingly heldwith .y

their free ends extending inwardly towards y 1 each otnei and forwardly, ywhereby the end ofl a pipe vmoving rearwardlytherebetween mayengage the inner free endsol` the lingers i and move them rearwardly about their pivots with the result that during such movement their free ends move further inwardly to crimp the pipe. y

In testimony of which invention, I have hereunto set my hand, at Philadelphia, Pennsylvania, on this 23rd day of February, 1928.

` AUGUST D. KUMPF.

4 1 ioo i asf ' iio 

